Using Baking Soda to Combat Powdery Mildew
I heard you could use baking soda to control powdery mildew. Is this true? If so, do you have the recommended rate?
Cornell University discovered baking soda was an effective control against powdery mildew. It has been used by gardeners on vine crops, roses, perennials and other edible and ornamental plants. Start by mixing 1 tablespoon of baking soda in a gallon of water. Add a teaspoon of insecticidal soap OR lightweight horticulture oil to act as a spread sticker for the solution. Spray the plants at first sign of the disease. Repeat every 7 to 10 days throughout the season.
Upcoming Webinars & Appearances
Feb. 4, 2023
WCBA's Home Building &
West Bend, Wisconsin
Feb. 8, 2023
Indoor Container Garden Design & Display Ideas
Feb. 10-12, 2023
Garden & Landscape EXPO
Feb. 15, 2023
10 Tips for Growing Better Dahlias!
Feb. 17-19, 2023
NARI Milwaukee Spring Home Improvement Show
West Allis, Wisconsin
Feb. 22, 2023
Grow Beautiful Water Gardens
Watch Melinda's past webinars ON DEMAND